Miter-box.



J. PELLETIER.

MITER BOX.

APPLICATION FILED APR.20. 1914.

lpjl 34921, Patented Apr. 6, 1915.

2 SHEETS-SHEET l.

THE NORRIS PETERS Cc., PHOTC-LITHQ. WASHINGTUN4 D. C.

l. PELLETIER.

mmm Box. APPLICATION FILED APR- 20, I9I4.

:L 9 l 34,286 Patented A191.v 6, 1915.

2 SHEETS-SHEET 2.

lill STA FFlC,

JOSEPH PELLETIER, OIE MONTREAL, QUBEC', CANADA.

lVIITER-BOX.

Specification of Letters Patent.

Patenten am. s, isis.

Application led April 20, 1914. Serial No. 833,022.

ing at No. 377 Dorion street, Montreal,

Province of Quebec, Canada, have invented certain new and usefulImprovements in Miter-Boxes; and 1 do hereby declare that the followingis a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same.

The invention to be hereinafter described relates to miter boxes.

1n order to more clearly disclose the construction, operation, and useof the invention, reference should be had to the accompanying drawingsforming part of the present application.

r1`hroughout the several figures of the drawings like referencecharacters designate the same parts.

In the drawings: Figure 1 is a front view of the box; Fig. 2 is a topplan view; Fig. 3 is a detail side view of the saw; Fig. 4L is a sectionon line 4.-4 of Fig. 3 looking in the direction of the arrows; Fig. 5 isa fragmentary sectional view on line 5-5 of Fig. 1 looking in thedirection of the arrows; Fig. 6 is a fragmentary, detail, plan view ofthe center beam partly broken away to show the adjustment of thevertical angle adjusting rod; and Fig. 7 is a detail front view of oneof the backs.

The main objects of the invention are to provide means for quickly andeasily sawing horizontal and vertical angles, such means being adaptedto receive material of dilferent widths and thicknesses, and also beingcapable of adjustment to accommodate saws of different widths.

Another object of the invention is, to provide means whereby the saw maybe permitted to enter the material for its full width, thus permittingmaterial of practically any height, dependent only on the range of thevertical adjustment of the saw guides, to be cut.

Referring to the drawings in detail, 1 designates the bed mounted on thetable 2 in the usual manner. rfable 2 is provided at the center of itsback edge with an integral lug 3 to which a hollow beam 4l, of squarecross section, is pivoted, near its back end. A rod 5 is rotatablymounted in beam l and extends the full length thereof, and is providedat each end with a block 6, on which a saw guide is mounted.

The rod 5 is provided with a number of circumferential bores adapted toreceive the inner end of a spring pressed pin 7 mounted y at one side ofbeam et. By withdrawing the pin 7, blocks 6 and consequently the sawguides mounted thereon, may be rotated to any desired angle to thevertical and locked in adjustment, by releasing the pin.

A short distance in back of pin 7 a yoke 8 is slidably mounted in groove9 in the sides of the beam. This yoke is pressed upwardly by coilsprings 1() placed between the top thereof and the beam, and the beam isslightly raised, as at 11, and recessed, in order to permit a slightvertical movement of the yoke. The yoke is provided on its top with acentrally located integral lug or tooth 12 operative through an opening13 through the plate 14 which is secured to portion 11 of the beam, tosecure the yoke 8 in position.

A U shaped pressure foot 15 is pivotally mounted on the sides of beam 4,slightly in advance of yoke 8, and has the ends of its arms mounted insuitable recesses 16 near the lower ends of the yoke arms. The tooth 12of yoke 8 is adapted to engage with a segmental rack 17 integral withthe under face of table 2, so as to lock beam A in lateral adjustment.When it is desired to adjust the box for a horizontal angle the outerend of pressure foot 15 is raised, this disengages tooth 12 from rack 17so that beam 4L may be freely revolved on its pivot. l/Vhen the desiredset has been obtained the pressure foot is released and the tooth 12aga-in coperates with rack 17 to lock the beam, as before. may bequickly and easily set to cut any lateral angle desired, as indicated inbroken lines in Fig. 2.

1t will be evident that when the beam t is swung very far to either sidethe saw is apt to engage the inner end of one of the backs 18. To avoidthis difficulty the backs are fitted in their lower edges with shoulders18a, which are slotted longitudinally as at 19. `When the backs are inoperative position the shoulders fit snugly against the under face ofbed 1. lThumb screws 20 are inserted through slots 19 and threaded intothe table 2. By loosening the screws the backs may be adjustedlongitudinally in By this means the blocks l either direction, andsecured inadjustment by a friction grip, as clearly shown in Fig.2..

In order to permit work of any height Vto be cut the saw guides are oftelescopic construction. To the upper face of each of the blocks 6 acylindrical tube 21 is secured. This tube is provided in its front andback with alined slots 2la extending from a point near the bottom to thetop thereof. This tube is further provided, near its top, with an 'innerannular shoulder 22. A second tube 23, similar to the first tube, isslidably mounted therein. Tube 23 fits snugly in the outer tube and isprovided at its lower end with an outer annular shoulder 23a whichengages shoulder'22 ofthe outer tube, when the tube 23 is raised to itsgreatest height, to prevent it from being entirely withdrawn.

A post 24 is slidably mounted in tube 23 a and provided, at its lowerend, with van integral outer shoulder which is adapted to engage theshoulder in the 'upper end of the tube. This post is providedwith acentral slot 24a extending nearly the full length thereof, which is keptin alinement with the slot of tube 23 by means of a lug 25 integral withthe inner face thereofl and operative in a groove 26 in one side of thepost. Tube 23 may be turned so as to bring its slot into alinement withthe slot of tube 21, thus bringing the guide into operative position toreceive the saw. By making the guides of telescopic construction theymay be eX- tended so that material of practically any height can besawed in this box.

In order to facilitate the cutting of material of unusual height it isdesirable t0 use a saw no portion of the blade of which is thicker thanthe Vcutting edge. With this object in viewthe saw 27, instead of beingprovided with the usual back, is a plane saw and is provided near itsupper edge with two parallel horizontal grooves extending the fulllength thereof. These grooves are located on opposite sides of the saw,a slight distance apart. Near the upper end of slot 24a of post 24 twooppositely disposed lugs 28 and 29 are provided. These lugs are adaptedto fit into the grooves of the saw, so as to support it in the post. Bythis means a saw can be used which is at no point thicker than itscutting edge, and may therefore pass entirely into the material beingcut.

As post 24 supports the saw it is necessary that means be provided foradjusting the post so as to have the lower edge of the saw, when thepost is in its lowest position, level with the upper face of the bed 1.To permit this adjustment the post is supported by a screw 30 threadedthrough block 6 and provided with a conical tip which rfits into aconical recess centrally located in the 'bottom of the post. 'By thisconstruction the downward movement of the post may be regulated asdesired, which has two important advantages. First, `sfaws of dierent4widths can be used in the box. Secondly, the `posts can be adjusted sothat the cutting edge of the saw will not be allowed topa'ssi beyond thematerial being cut, so as not to injure the `upper surface of the bed.Another advantage of this construction is, that the weight of the posts24'is'supported byv the vvsaw, so 'thatthey act to exert a slight`downward pressure on the saw, thus increas# ing its e'iicienc'yandserving" to steady it.

InY orderfto insure accuracy in small works special means have beenprovided for holding small pieces of material. yThe bedrl is provided,near each end,'with a transverse slot 8l. A rod 32 is rotatably mountedin slot 31' and has its inner end secured through a plate set into thebed, by a loose nut. 4This rod is ofrectangular cross section and hasits side edges serrated, as shown in Fig. 2. A'block 'is mounted on rod32 andis providedwith a'bore of the same lshape but slightly larger thanthe rod. Bythi's means the'block can beslid, but if it is lforced ineither directionl the edges of its bore will engage the serrations ofthe rod, so as to ses cure it in position. Normally the blocks 33 areturnedV down into recesses 34 in the bedv l, so asto be Hush with theupperfface thereof. When it is desired to securesmall work, the rods aregiven a half rotation upward, so as toraise the blocks to verticalkposition, the blocks -are'then slid -alongthe rods until they are thesame distance from backs 18 as the thickness of the materialto beheld,the material is then placed between the blocks and-the backs, andacts to bind therblocks on the rod, so as to secure them Yin position.When the smallmaterial has been cut the blocks are moved along rods 32 juntil they come opposite their respective recesses, the rodsare thengiven a half rotationV downward, which turns the blocks into theirrecesses, out of the way, as in Fig. 2.

Itis thought that the construction, operation, and use of the inventionwillbe clear` fromV the preceding detailed description. a

Changes may be made in the construction, arrangement, and disposition ofthe several parts of the invention'without in any way departing from thefield and scope of the same, and it is Vmeant to include all such withinthis application wherein only a pre-` the under face of the table, atthe center of the back edge thereof, and provided in one side with aperforation; a segmental rack rigid with the under face of the table,above the said beam; a yoke slidably mounted on the beam and providedwith a tooth adapted to normally engage the teeth of the said rack; apressure foot pivotally mounted on the beam and having its arms mountedin recesses in the arms of the yoke; a rod rotatably mounted through thesaid beam and having a block at each end, a spring catch adapted to locksaid rod to said beam; vertically adjustable saw guides carried by theblocks at the end of the rod; adjusting means therefor; and means forholding small pieces of material.

2. ln combination with a miter boX table and a hollow beam pivotedthereto, means for looking said beam in any position of pivotaladjustment, a rod rotatable in said beam and provided with acircumferential series of bores, a spring catch mounted on said beam andengaging any one of said bores according to the axial position of saidrod and a saw-guide block carried by said rod substantially as setforth.

3. In a device of the character described, means for holding smallmaterial, comprising; a table; a bed mounted thereon and provided neareach end with a slot and a recess contiguous therewith; backs secured tothe said table; rods rotatably mounted in the said slot, the said rodsbeing of rectangular cross section and having serrated sides, and havingtheir inner ends loosely secured; and blocks slidable on the said rods,the said blocks being provided with bores slightly larger than the rodsand being adapted to be turned down into the recesses, when not in use,and being of such a height as to be flush with the upper face of the bedwhen so turned down.

In witness whereof I have hereunto set my hand in the presence of twowitnesses.

' JOSEPH PELLETIER. Witnesses:

A. BASTIEN,

A. PizzocoLo.

C'opies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, D. C.

